Desktop diagnostic device



FIG. 1 is a front perspective view of a desktop diagnostic system.

FIG. 2 is a rear perspective view thereof.

FIG. 3 is a front view thereof.

FIG. 4 is a top view thereof.

FIG. 5 is a bottom view thereof.

FIG. 6 is a first side view thereof; and,

FIG. 7 is a second side view thereof.

The broken lines are included for the purpose of illustrating environment and form no part of the claimed design. 

CLAIM The ornamental design for a desktop diagnostic device, as shown and described. 